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Subject[PATCH 1/2] fpga: mgr: Adds secure BitStream loading support
Date
This commit adds secure flags to the framework to support
secure BitStream Loading.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
---
drivers/fpga/of-fpga-region.c | 10 ++++++++++
include/linux/fpga/fpga-mgr.h | 12 ++++++++++++
2 files changed, 22 insertions(+)

diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c
index e405309baadc..3a5eb4808888 100644
--- a/drivers/fpga/of-fpga-region.c
+++ b/drivers/fpga/of-fpga-region.c
@@ -228,6 +228,16 @@ static struct fpga_image_info *of_fpga_region_parse_ov(
if (of_property_read_bool(overlay, "encrypted-fpga-config"))
info->flags |= FPGA_MGR_ENCRYPTED_BITSTREAM;

+ if (of_property_read_bool(overlay, "userkey-encrypted-fpga-config"))
+ info->flags |= FPGA_MGR_USERKEY_ENCRYPTED_BITSTREAM;
+
+ if (of_property_read_bool(overlay, "ddrmem-authenticated-fpga-config"))
+ info->flags |= FPGA_MGR_DDR_MEM_AUTH_BITSTREAM;
+
+ if (of_property_read_bool(overlay,
+ "securemem-authenticated-fpga-config"))
+ info->flags |= FPGA_MGR_SECURE_MEM_AUTH_BITSTREAM;
+
if (!of_property_read_string(overlay, "firmware-name",
&firmware_name)) {
info->firmware_name = devm_kstrdup(dev, firmware_name,
diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h
index 2bc3030a69e5..2f7455a60666 100644
--- a/include/linux/fpga/fpga-mgr.h
+++ b/include/linux/fpga/fpga-mgr.h
@@ -67,12 +67,24 @@ enum fpga_mgr_states {
* %FPGA_MGR_BITSTREAM_LSB_FIRST: SPI bitstream bit order is LSB first
*
* %FPGA_MGR_COMPRESSED_BITSTREAM: FPGA bitstream is compressed
+ *
+ * %FPGA_MGR_USERKEY_ENCRYPTED_BITSTREAM: indicates bitstream is encrypted with
+ * user key
+ *
+ * %FPGA_MGR_DDR_MEM_AUTH_BITSTREAM: do bitstream authentication using DDR
+ * memory if supported
+ *
+ * %FPGA_MGR_SECURE_MEM_AUTH_BITSTREAM: do bitstream authentication using secure
+ * memory if supported
*/
#define FPGA_MGR_PARTIAL_RECONFIG BIT(0)
#define FPGA_MGR_EXTERNAL_CONFIG BIT(1)
#define FPGA_MGR_ENCRYPTED_BITSTREAM BIT(2)
#define FPGA_MGR_BITSTREAM_LSB_FIRST BIT(3)
#define FPGA_MGR_COMPRESSED_BITSTREAM BIT(4)
+#define FPGA_MGR_USERKEY_ENCRYPTED_BITSTREAM BIT(5)
+#define FPGA_MGR_DDR_MEM_AUTH_BITSTREAM BIT(6)
+#define FPGA_MGR_SECURE_MEM_AUTH_BITSTREAM BIT(7)

/**
* struct fpga_image_info - information specific to a FPGA image
--
2.18.0
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